Question

line q passes through points (10, 6) and (1, 2). Line r is perpendicular to q. What is the slope of line r?

Answer 1

Answer:

slope of r = -9/4

slope of Q =     4/9  

Step-by-step explanation:

x1 y1  x2 y2

10 6  1 2

   

(Y2-Y1) (2)-(6)=   -4  ΔY -4

(X2-X1) (1)-(10)=    -9  ΔX -9

   

slope=   4/9